145 results about "Fork tuning" patented technology

The invention relates to the technical field of measuring devices, in particular to an online densitometer, the bottom of a control body is fixedly connected with a connection control component, the bottom of the connection control component is fixedly connected with a measuring tuning fork, and the outer side of the measuring tuning fork is movably sleeved with two cleaning scraping rings; three mounting holes are formed in the ends of the two cleaning scraping rings, scraping ring springs are fixedly connected into the mounting holes, connecting protection blocks are fixedly connected between the scraping ring springs in the adjacent mounting holes of the two cleaning scraping rings, and the connecting protection blocks are slidably clamped into the mounting holes. The online densimeter has the advantages of being simple in structure, convenient to operate, capable of being cleaned and high in measurement accuracy, adhering substances on the measurement surface can be effectively removed through the scraping and vibrating mechanism, the accuracy of the measurement result is guaranteed, meanwhile, the design of the online densimeter considers the requirement of vibration measurement, and it is guaranteed that vibration measurement is not interfered after cleaning.

The present invention discloses an intelligent multi-parameter oil quality monitoring device, comprising: a housing with a detection end and an output end at both ends, a resonant cavity and a detection cavity are arranged inside the housing, a particle detection channel and an oil port are provided on the housing; a monitoring component, including a sensing circuit module, a tuning fork resonance sensor, a temperature sensor and a microfluidic chip, the tuning fork resonance sensor includes a quartz tuning fork, the microfluidic chip includes a capacitor, and the capacitor includes electrode plates. This intelligent multi-parameter oil quality monitoring device integrates the temperature sensor, the tuning fork resonance sensor and the microfluidic chip inside the housing. By installing the housing on the oil pipe, multiple parameters such as the viscosity, dielectric constant, temperature, abrasive particle size, density, etc. in the oil can be monitored simultaneously, so as to accurately judge the oil quality, avoid false alarms, and perform data transmission through the sensing circuit module, with high integration, small volume and strong anti-interference ability.

The invention discloses an atomic force microscopic imaging device and method for a Josephson probe microscope, and belongs to the technical field of atomic force microscopic imaging. The device comprises a sample table, a second displacement assembly, a first displacement assembly, a superconductive Josephson probe assembly, a first controller, a second controller, a lock-in amplifier, a current amplifier and a high-speed data collector, the superconductive Josephson probe assembly comprises a probe module and a tuning fork module, and the probe module comprises a probe and a probe box. The tuning fork module comprises a tuning fork wafer and a substrate, the probe is connected with the tuning fork wafer, the lock-in amplifier is connected with the tuning fork wafer to monitor the amplitude change of the tuning fork wafer in real time, and the lock-in amplifier drives the sample to move up and down by controlling the second controller to realize closed-loop adjustment of the distance between the probe and the sample. The distance between the probe and the surface of the sample is adjusted in real time, the high stability in the imaging process is ensured, and the resolution is further improved; the service life of the probe can be effectively prolonged, and the use cost is reduced.

A resonant beam accelerometer employing a pair of double ended tuning forks and a proof mass having meso-scale mass as it is formed in the handle layer of a SOI wafer and a method of fabricating same is disclosed. The resonant frequencies of the pair of double ended tuning forks change in opposite directions when an externally applied acceleration is in a direction parallel to the pair of double ended tuning forks. Due to the proof mass having meso-scale mass, the resonant beam accelerometer is very sensitive. By employing a lid and a stator cap, the active portions of the resonant beam accelerometer may be sealed in a vacuum to further increase sensitivity.

A tuning-fork-type driving element includes: a movable part rotatable about a rotation axis; a coupling part extending from the movable part along the rotation axis; a pair of arm parts placed with the coupling part located therebetween; a support part coupling the coupling part and the pair of arm parts to a fixation part; and drive parts placed on the arm parts, respectively. The pair of arm parts each have a protrusion that overlaps a node line that occurs when the arm parts vibrate in a higher-order vibration mode higher than a first-order vibration mode or an extension line of the node line.

The utility model discloses a multi-tuning fork mechanical leakage listening rod, which relates to the technical field of pipeline detection and comprises a supporting rod, a mounting rod is mounted at the top of the supporting rod, a leakage listening assembly is arranged at the bottom of the supporting rod, and a connecting rod for adjusting the use length is arranged at the top of the supporting rod. And sound transmission rods are arranged in the connecting rod and the mounting rod. The beneficial effects of the utility model are that the first flange plate and the second flange plate are fixed through the bolts, and the connecting rod can be installed between the supporting rod and the installation rod, thereby achieving the effect of adjusting the use length, avoiding the problem of insufficient length during the detection of a deeper underground pipeline, and improving the detection precision through arranging a plurality of groups of tuning forks. The sound frequency can be distinguished more finely, the sensitivity and accuracy of water leakage detection are improved, the tuning fork transmits sound to the sound transmission rod through the sound listening rod, and the sound amplification cover amplifies the sound transmitted by the sound transmission rod.

The utility model discloses a multipurpose feeling detection device, which comprises a grab handle and an end head, the front end of the grab handle is connected with the middle part of the end head, the top end of the end head is provided with a tuning fork, a plurality of round counter bores are arranged from the bottom surface of the end head to the inside of the end head, a guide groove is arranged from the outer side surface of the end head to the inside of the end head, and sliding columns and springs are arranged in the round counter bores. The bottom end of the sliding column is clamped with the top end of the spring, a clamping block is arranged on the outer side face of the top of the sliding column, and a testing element is arranged in the center of the bottom end face of the sliding column and completely located in the round counter bore in the initial state. The grab handle comprises a lower handle, an upper handle, a hinge disc and a connecting handle, the inner end of the lower handle and the inner end of the upper handle are hinged together through the hinge disc, and the hinge disc is connected with the end head through the connecting handle. According to the utility model, the functions of qualitative tactile sensation, quantitative tactile sensation, pain sensation, vibration sensation and composite sensation evaluation are integrated, other tools are not needed in the sensation evaluation process, and the device is simple and compact in structure, small in size and convenient to carry and use.

The invention relates to the technical field of chemical powder conveying, in particular to a powder storage tank high alarm switch false alarm prevention device and a control method thereof. According to the technical scheme, the false alarm prevention device for the high alarm switch of the powder storage tank comprises a powder bin, a powder conveying pipeline, a tuning fork main body, a tuning fork switch, a vibrator, an exhaust port, an air source pipe, an electromagnetic valve and a DCS control line, the powder conveying pipeline is arranged on the top face of the powder bin, and the tuning fork switch is arranged on one side of the powder conveying pipeline; a tuning fork body is arranged on the top face in the powder bin and electrically connected with the tuning fork switch. The pipeline below the mounting flange of the high-alarm tuning fork switch is vibrated at regular intervals, so that accumulation of polyethylene powder flying dust on the high-alarm tuning fork switch can be effectively removed, false alarm of the high-alarm tuning fork switch due to material hanging is prevented, the false alarm rate of the high-alarm switch is remarkably reduced, and interlocking shutdown of an air conveying system caused by false alarm is avoided.

The utility model provides a multifunctional tuning fork device for ear-nose-throat head and neck surgery, and relates to the technical field of medical instruments, the multifunctional tuning fork device mainly comprises a tuning fork, a connecting rod assembly and a hammer, the tuning fork is Y-shaped, the connecting rod assembly is fixedly arranged at the non-bifurcated end, the hammer is arranged at the tail end of the connecting rod assembly, and the connecting rod assembly is connected with the hammer. The connecting rod assembly comprises a connecting rod, a first handle and a second handle which are arranged in sequence, one end of the connecting rod is fixedly connected with the tuning fork, the opposite end of the connecting rod is detachably connected with one end of the first handle, the opposite end of the first handle is detachably connected with one end of the second handle, and a sound hammer is fixedly arranged at the opposite end of the second handle; according to the tuning fork device, when the tuning fork device is not used, the second handle and the first handle are connected together, so that forgetting to carry the tuning fork can be prevented, when the tuning fork device is used, the second handle and the first handle are detached, the tuning fork and the hammer are used in an impact mode, and a doctor can use the tuning fork device conveniently.

The utility model discloses a cleaning device for an electronic densimeter, and belongs to the technical field of grouting. The device comprises a grouting pipeline; a pipeline notch is formed in the top of the grouting pipeline, and a connecting pipe communicated with the grouting pipeline is mounted on the pipeline notch; the detection assembly comprises a densimeter main body, a tuning fork seat and a tuning fork sensor; the tuning fork seat is mounted at the bottom of the densimeter main body, the tuning fork sensor is mounted at the bottom of the tuning fork seat, and the bottom of the tuning fork seat penetrates through the connecting pipe and the pipeline notch and then extends into the grouting pipeline; the cleaning assembly comprises a first nozzle and a second nozzle. The utility model relates to a densimeter flushing device, which is used for flushing a densimeter under the condition that the grouting work is not stopped. The device is time-saving and labor-saving, and does not affect the normal construction of grouting work. The field working efficiency is greatly improved, and the loss of labor force of personnel is reduced.

1. Name of the product in this design: Tuning Fork. 2. Purpose of this design: For use in physical resonance experiments. 3. The key design features of this product are its perspective view. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention belongs to the technical field of lead-bismuth reactors, and particularly relates to a lead-bismuth reactor control rod assembly positioning structure. The control rod cluster comprises an upper end positioning structure, a lower end positioning structure, a tuning fork type upper end plug and a tuning fork type lower end plug, the control rod cluster is located between the upper end positioning structure and the lower end positioning structure, the control rod cluster comprises 19 control rods, the upper end positioning structure is connected with the tuning fork type upper end plug in a matched mode, and the lower end positioning structure is connected with the tuning fork type lower end plug in a matched mode. The upper end positioning structure and the lower end positioning structure are located at the two ends of the control rod bundle and jointly achieve positioning of the control rod. On the basis of meeting the requirement of flow distribution uniformity of the control rod assembly coolant and overcoming transverse shaking of the control rod, the lead-bismuth coolant uniformly flows through the rod cluster type control rod and the transverse impact of the coolant on the control rod is reduced on the basis of realizing rapid assembly of the control rod assembly.

The invention relates to an iodine adsorption material and a preparation method and application thereof, and belongs to the technical field of iodine adsorption. The iodine adsorption material provided by the invention comprises at least one structural component which is in a tuning fork shape, has a tuning fork shape and groups such as a pyridine ring and amide, and accords with a specific general formula (I), a general formula (II) or a general formula (III); the iodine adsorption material is free of purification in the preparation process, high in yield and suitable for large-scale production; the water-phase iodine adsorbent has good iodine adsorption capacity, can realize ultra-fast adsorption of water-phase iodine, still has high adsorption efficiency after being recycled for multiple times, solves the problems of slow adsorption rate, high preparation cost, poor stability, poor cycle performance and the like of the existing adsorbent, and has very high application value.

A support for calibration of a tuning fork type online densimeter comprises a base and a support body fixedly installed on the base, a housing is fixedly installed on the side wall of the support body, a lifting mechanism is installed in the housing and comprises a servo motor, and the output end of the servo motor is connected with a ball screw arranged in the vertical direction through a flexible coupler. A movable nut of the ball screw is connected with a supporting plate, a tray is mounted at the end part of the supporting plate, a mounting hole for mounting the tuning fork type online densimeter is formed in the tray, a through hole corresponding to the mounting hole is formed in the supporting plate, an adjusting bolt is arranged on the bottom surface of the supporting plate, and the adjusting bolt penetrates through the supporting plate and is propped against the tray. According to the utility model, the height of the tuning fork type on-line densimeter can be adjusted according to the length of the sensor at the lower end of the tuning fork type on-line densimeter, so that the tuning fork type on-line densimeter can meet the calibration requirements of tuning fork type on-line densimeters with different sizes.

The application discloses an anti-disturbance tuning fork densimeter probe for high-viscosity fluid, which comprises a bearing sleeve, a mounting plate fixed in the bearing sleeve, two groups of butterfly spring sets symmetrically arranged at the bottom end of the mounting plate, a bearing plate fixed at one end of the butterfly spring set, a recess cavity formed in the bearing plate, a piezoelectric ceramic piece mounted in the recess cavity, and a tuning fork probe fixed on the piezoelectric ceramic piece. The anti-disturbance mechanism is composed of a disturbance shielding sleeve, a spiral flow guide piece, a spiral flow channel and a polyurethane buffer layer. During the measurement process, the disturbance shielding sleeve guides the high-viscosity fluid to flow through the tuning fork probe stably through the spiral flow channel, so that the direct impact of the flow velocity fluctuation on the tuning fork probe is avoided, meanwhile, the polyurethane buffer layer can absorb the fluid impact energy, and the double anti-disturbance effect can be realized by the combination of the two, the measurement precision of the device is improved, and the device has high use performance.

The embodiment of the invention discloses a self-cleaning tuning fork sensor. The self-cleaning tuning fork sensor comprises a tuning fork sensor and a controller, the tuning fork sensor comprises a tuning fork body and a vibration assembly. The controller comprises a self-cleaning module; the self-cleaning module is electrically connected with the vibration assembly and used for executing cleaning operation. Wherein the cleaning operation comprises the step of controlling the vibration assembly to drive the tuning fork body to vibrate so as to remove dirt attached to the surface. According to the embodiment of the invention, the self-cleaning module is added for removing dirt on the surface of the tuning fork body, manual disassembly for cleaning is not needed, the manual maintenance cost is reduced, the shutdown maintenance time is shortened, and meanwhile, the detection precision stability and long-term operation reliability of the sensor are enhanced.

The invention discloses a micro-electro-mechanical gyroscope which comprises a plurality of tuning forks of the same structure, and each tuning fork of the tuning forks comprises a first frame, a second frame and a third frame, a second frame adjacent to the first frame; a Coriolis force unit coupled to the first frame and the second frame, respectively; a drive unit and a detection unit, the drive unit being located in one of the first frame and the second frame, the detection unit being located in the other of the first frame and the second frame; wherein the first frames in the adjacent tuning forks are coupled together, and the second frames in the adjacent tuning forks are coupled together.

The application discloses a processing technology of a tuning fork crystal, which comprises glass beads, tuning fork pieces arranged on the glass beads, shells arranged on the tuning fork pieces and lead wires arranged at the bottom of the glass beads, the tuning fork pieces are ST cut type, silver-plated electrodes are arranged on the tuning fork pieces, and the silver-plated electrodes are designed in a rotary mode. The unique ST cut type is adopted instead of the traditional DT cut type, so that a higher frequency range can be obtained. Since the vibration mode of the ST cut type is a torsional vibration mode, the electrodes are designed in a rotary mode, so as to conform to the oscillation mode of the ST cut type, thereby ensuring that the crystal piece can work stably after starting to vibrate. By adopting the unique ST cut type, the traditional tuning fork structure is retained, the rotary electrodes are utilized to promote the crystal piece to start to vibrate smoothly, and the torsional vibration mode maximally realizes the frequency which cannot be reached by the conventional tuning fork crystal.

The utility model discloses an integrated device with a stop line automatic cleaning tuning fork densimeter, which relates to the technical field of tuning fork densimeters and comprises a butt flange and a densimeter instrument, a flange pipe used for being connected with the densimeter instrument is fixedly arranged on the butt flange, a cleaning jacket is connected onto the flange pipe, a water inlet pipe is arranged on one side of the cleaning jacket, and a water outlet pipe is arranged on the other side of the cleaning jacket. A water inlet electromagnetic valve is connected to the water inlet pipe, a water distribution ring communicated with the cleaning jacket is arranged in the flange pipe, the tuning fork rod is sleeved with the water distribution ring, the water distribution ring is movably connected into the flange pipe, the water distribution ring is of a hollow structure, a water inlet hole is formed in the top of the water distribution ring, a self-sealing assembly is arranged on the water inlet hole, and a cleaning assembly used for cleaning tuning fork terminals is arranged at the bottom of the water distribution ring. The device is simple in structure, is provided with an automatic water closing structure, can prevent backflow in the production process, can perform automatic in-situ cleaning on the tuning fork terminal of the tuning fork densimeter when a line is stopped, and can effectively ensure the detection precision of the tuning fork densimeter.

The invention provides a tuning fork sensor integrated measuring device, which comprises a test base and a plurality of test assemblies, and the plurality of test assemblies are arranged on a test mounting surface of the test base in an array. The test assembly comprises a mounting base, a tuning fork sensor, a spring needle assembly, a spring needle mounting seat, a test flip cover, a buckle assembly, a measurement and control circuit, a bottom plate, a shock absorber assembly and a shell, and through specific design of the mounting base and the spring needle assembly, stable assembly and electrical connection of the sensor are realized; and meanwhile, a mode of integrally mounting the base in a vibration reduction manner and fixing the sensor in a buckling manner is adopted, so that external interference is reduced, and test accuracy is improved.

Spectroscopic sensor for characterizing the absorption or determining the concentration of solid materials or liquid samples based on the photoacoustic effect, comprising - a device into which the liquid or solid sample to be analyzed is inserted or placed, - at least one laser in modulation mode to excite the material-specific molecules, - at least one sound transducer for detecting the sound pressure wave, - a device for detecting and processing the photoacoustic signal, characterized in that at least one sound transducer in the form of a quartz tuning fork (QTF) is used, the resonance frequency of which corresponds to the laser modulation frequency, that an acoustic resonator of a certain geometry, which is placed on the sample and has the same resonance frequency as the QTF, is used, that the laser modulation frequency corresponds to the resonance frequency of the resonator, and that the gas which fills the resonator shows as little or no absorption as possible in the wavelength range of the laser.

The utility model belongs to the technical field of precision sensors, and discloses a novel silicon resonance accelerometer structure based on lever difference. The structure comprises an upper layer, a middle layer and a lower layer, the middle layer is a monocrystalline silicon micro-mechanical structure and comprises a mass block, an amplification lever structure, a double-end fixed tuning fork type resonator and the like; through a central anchor point and two amplification lever structures with opposite force transmission directions, the stress difference of the two resonators is realized, the number of supporting anchor points is reduced, the resonators are in a thermal expansion free state under a temperature change working condition, the thermal stress influence is reduced, and the temperature performance is improved; meanwhile, the area of the stress isolation frame is reduced, the difficulty of the processing technology is reduced, and the engineering application of the silicon resonance accelerometer to an ultra-precise system is promoted.

1. Name of the product in this design: Tuning Fork (for neurology). 2. Purpose of this design: A tuning fork medical device specifically designed for use in neurology. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

To provide a tuning-fork type crystal vibration piece and a resonator that avoid transmission of energy to a ceramic base and further evade too large total impedance of a device due to vibration leakage.SOLUTION: A turning-fork type crystal vibration piece that includes a crystal vibration piece body 1 and is provided with an energy shunt block 2 protruding outward in an energy transmission path of the crystal vibration piece body 1, is provided additionally with an energy shunt block 2 which protrudes outward at a turning fork fixed block, and when the crystal vibration piece is packaged and fixed to a ceramic base, the energy of the fork is not transmitted downward to a dispensing position of the fixed block, but effectively limited to the domain of the energy shunt block 2.SELECTED DRAWING: Figure 3

The invention relates to the field of test equipment, in particular to a resonance test device which comprises two tuning fork units, a knocking unit and an identification unit. Each tuning fork unit comprises a base, and a test tuning fork is arranged on the base; the test tuning fork is detachably connected to the base; an identification unit is arranged on the base of one tuning fork unit; the identification unit comprises a support frame arranged on the base, and the support frame is connected with a detection ball through a connecting rope; the detection ball is attached to the adjacent test tuning fork; the knocking unit comprises a knocking hammer for knocking the test tuning fork; through cooperative use of the tuning fork unit, the knocking unit and the identification unit, demonstration of a resonance test can be realized; meanwhile, the test tuning fork and the base are designed to be in a detachable connection mode, so that the resonance test device is convenient to disassemble and assemble, and subsequent folding, unfolding, transferring and using of the resonance test device are facilitated.

Provided is a tuning fork-type piezoelectric vibrator (1) having at least a tuning fork-type piezoelectric vibrating piece (2) mounted in a container (3). The fork-type piezoelectric vibrating piece (2) comprises: a base part (20); a pair of vibrating arm parts (21, 22) extending in a first direction from one end side of the base part (20); and metal bumps (7a, 7b) joined to the container (3). The pair of vibrating arm parts (21, 22) have: widening parts (212, 222) having weights at the respective leading end sections; and widened parts (211, 221). The center (P) of the container (3) in a plan view is disposed in a region surrounded by a virtual outer peripheral frame (H1) of the widened parts (211, 221) and the widening parts (212, 222).

The present invention discloses a high-precision electromechanical coupling resonant tuning fork sensor based on piezoelectric or inverse piezoelectric effect, comprising a tuning fork body formed of piezoelectric material; the tuning fork body comprises a tuning fork base and two or more tuning fork arms provided on the tuning fork base; each tuning fork arm is embedded with at least one excitation electrode and at least one sensing electrode; all excitation electrodes are connected to an excitation electrode connection point via wires; all sensing electrodes are connected to a sensing electrode connection point via wires; the excitation electrode connection point and the sensing electrode connection point are respectively provided on the tuning fork base for electrical connection with external wires; the outer peripheral surface of the tuning fork body corresponding to the tuning fork arm is provided with a metal-plated electrode with adjustable electrode potential. The present invention has the characteristics of high robustness, high quality factor and high sensitivity, is suitable for working condition measurement in harsh environments, and is expected to be applied to fields such as petrochemical, food, gas sensing, medicine and scientific research.

The utility model belongs to the technical field of coal-bed gas development, and discloses a coal-bed gas shaft pulverized coal migration and settlement test system which comprises a simulation shaft which comprises an inner-layer pipe column and an outer-layer pipe column, an annular space part is arranged between the inner-layer pipe column and the outer-layer pipe column, and the annular space part is communicated with the inner-layer pipe column. The simulation shaft can rotate and incline around the center of the simulation shaft within a preset angle; the liquid injection system is connected with the first end of the annulus part and used for inputting pulverized coal slurry into the annulus part; the gas injection system is connected with the second end of the annulus part and used for inputting simulation gas into the annulus part, and the simulation gas and the pulverized coal slurry can flow to the inner-layer pipe column from the annulus part and return to the liquid injection system; the tuning fork resonance sensor is arranged in the simulation shaft in a penetrating mode, and a fork body is located in the inner-layer pipe column and used for detecting the vibration frequency when the pulverized coal slurry and the simulation gas flow in the inner-layer pipe column. The device can simulate the migration and settlement of pulverized coal in wellbores of different well types.

The embodiment of the present application relates to a tuning fork type piezoelectric vibration piece and an oscillator, which are used to improve Q value. The tuning fork type piezoelectric vibration piece comprises a base and two vibration arm parts extending from one end of the base, the two vibration arm parts are symmetrically arranged, and the polarities of the driving electrodes at corresponding positions are opposite; for each vibration arm part: a driving groove is arranged on the first main surface of the vibration arm part, and an inner wall driving electrode is arranged on the inner wall of the driving groove; a side wall driving electrode is arranged on the side wall of the vibration arm part; at least one planar driving electrode is arranged on the second main surface of the vibration arm part corresponding to the position of the driving groove along the width direction of the vibration arm part; and the first main surface and the second main surface are two opposite surfaces.

The invention relates to a quartz crystal resonator laser welding process and laser welding equipment. The quartz crystal resonator laser welding process comprises the following steps that S100, bases are assembled into a lower welding jig one by one after being sorted; s200, the tuning fork connecting end of each base is evenly coated with soldering paste; s300, the tuning fork pieces are assembled into an upper welding jig one by one after being sorted, the upper welding jig is assembled into a lower welding jig to form a welding jig, and the lower end of each tuning fork piece in the welding jig sinks into the welding paste and is transversely arranged between the two leads of the base; s400, the welding jig is conveyed into a welding station in laser welding equipment to be fixed, and laser heads are evenly distributed on the two sides, located on the welding jig, in the laser welding equipment; and S500, the laser head conducts laser welding on the tuning fork connecting ends of the base one by one at the preset welding interval, and the two electrode faces at the lower end of the tuning fork piece are welded and fixed to the two leads on the base correspondingly. The method has the effect of reducing energy consumption.